177 



Pole No. 12323) on the flowers of the rattlesnake-master, Eryngium 

 yucci folium, Aug. 27 (No. 178). 



According to Riley (Second Rep. U. S. Ent. Comra., p. 261. 

 1880) the eggs of this species are deposited on the ground in irregu- 

 lar bunches. He quotes Hubbard, who says that the larvae huddled 

 together when ready to moult, and that afterwards they became very 

 active. The insect passes the winter as a nearly mature larva, and 

 matures about August. The larvae are known to eat beetle larva? and 

 caterpillars ; the adults feed upon nectar and pollen. 



SCARABiEIDiE 



Euphoria sepulchralis Fabr. Black Flower-beetle. (PI. XLIV, 



fig- 4-) 



Only two specimens of this beetle were taken : one on the flowers 

 of the swamp milkweed, Asclepias incarnata (Sta. I, d), Aug. 24 

 (No. 156) ; the other from the flowers of Pycnanthemum pilosum in 

 the cleared area bordering the upland Bates woods (Sta. IV, a) Aug. 

 23 (No. 146). Blatchley ('10, p. 997) reports it at sap, on various 

 flowers, and especially on goldenrod ; and Webster has found it eat- 

 ing into kernels of corn (Insect Life, Vol. 3, p. 159). 



B. inda (PI. XLIV, fig. 3) has been observed by Wheeler ('10a, 

 p. 384) to fly to an ants' nest and bury itself ; he suggests that it may 

 live in such nests. Schwarz ('90b, p. 245) considers the inda larvae 

 abundant at Washington in nests of Formica Integra. For the life his- 

 tory of this beetle see Chittenden (Bull. 19, N. S., Bur. Ent., U. S. 

 Dept. Agr. , pp. 67-74. 1 899 ) . 



Pelidnota punctata Linn. Spotted Grape Beetle. (PI. XLIII, fig. 5.) 



Only one specimen of this beetle was taken. It was found upon 

 a prairie containing some forest relics, on a grape leaf (Sta. Ill, b) 

 Aug. 15 (No. 58). This insect is a forest or forest-margin insect; as is 

 indicated by the fact that the larva feeds upon the decaying roots 

 and stumps of oak and hickory. The adult devours leaves of the 

 grape and of the Virginia creeper (Cf. Rilev, Third Rep. Insects 

 Mo., p. 78). 



CERAMBYCID/E 



Tctraopcs tetraopJithahuus Forst. Four-eved Milkweed Beetle. 



This is one of the commonest insects in the prairie parts of Illi- 

 nois. Nevertheless, though almost every schoolboy who ever made 

 a collection of insects has it in his collection, very little is known of 

 its habits or life history. 



